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this means the ice maker mold heater isnt working. the mold has a heater in it that comes on to help release the ice , the heater is shown here in the bottom of the mold,
either the heater has failed or the thermostat, the problem is its most like damaged the ice maker module in the process, replacing the ice maker is the way to go. if you take your old one to lowes they sell replacement ice maker kits for around $59.00, hope this helps, thanks Bryan